Privacy Policy

Last updated: March 26, 2026

Introduction

Sudoku69 is a free browser-based Sudoku game. No account creation or login is required to play. This policy explains what data we collect and how we use it.

Data We Collect

We do not collect personal information directly. We do not ask for your name, email address, or payment information. There are no user accounts or registration forms on this site.

Google Analytics

We use Google Analytics (GA4) to understand how visitors use our site. Google Analytics collects anonymous data such as page views, session duration, device type, browser, and approximate geographic location.

Google Analytics uses cookies to gather this information. The data is processed by Google in accordance with their privacy policy. Our tracking ID is G-8JDMVHP06N.

Local Storage

Your browser stores game data locally using localStorage. This data stays on your device and is never sent to our servers:

• sudoku-settings — your theme preference (light, dark, or sepia)
• sudoku-board-store — your current game state and progress

We cannot access, read, or modify this data. It exists only in your browser.

Third-Party Services

Google Analytics is our only third-party service. We do not use advertising networks, tracking pixels, social media widgets, or any other third-party tools.

Your Rights

You have full control over the data stored on your device:

• Clear localStorage through your browser settings to delete all local game data
• Use browser extensions like Google Analytics Opt-out Add-on to disable analytics tracking
• Use your browser’s privacy or incognito mode to prevent any data storage

Contact

Questions about this privacy policy? Email us at privacy@sudoku69.com.